h1#logo{
  margin:0;
  padding:0;
  width:452px;
  height:72px;
  background:url('/images/logo.gif') no-repeat;
  text-indent:-9999px;
  float:left;
}
h1#logo a {
  display:block;
  width:452px;
  height:72px;
}

#search{
  float:left;
  width:250px;
  padding:0 20px 0 0;
}

.clear{clear:both;}
.textright{text-align:right;}

----


<div id="header">

<h1 id="logo"><a href="/">My Site Name</a></h1>

<div id="search">
 <form method="post" name="search" action="#">
  <p><input type="text" value=""> Search </p>
 </form>
</div>

<p class="clear textright"><a href="#">Donate to the Garden</a> | <a href="#">Donate to the Endowment Fund</a></p>

</div>